Elixir CRC will not compile on MAC OS

Question

My elixir project indirectly uses crc which has NIFs. They won't compile. It look like the linked does not see the libraries.

rtp_to_hls ●  rm -rf deps/ _build/ && mix deps.get && mix compile

==> crc
 C      checksum_xor.c
 C      crc_8.c
 C      crc_algorithm.c
 C      crc_model.c
 C      crc_nif.c
 C      crc_resource.c
 C      xnif_slice.c
 LD     crc_nif.so
Undefined symbols for architecture x86_64:
  "_enif_alloc", referenced from:
      _crc_model_load in crc_model.o
      _kh_resize_crc_stubs in crc_model.o
      _kh_resize_crc_models in crc_model.o
      _crc_nif_debug_table_1 in crc_nif.o
  "_enif_alloc_resource", referenced from:
      _crc_resource_create in crc_resource.o
      _crc_resource_clone in crc_resource.o
      _xnif_slice_create in xnif_slice.o
      _xnif_slice_create_x in xnif_slice.o
  "_enif_consume_timeslice", referenced from:
      _xnif_slice_trap in xnif_slice.o
  "_enif_free", referenced from:
      _crc_model_load in crc_model.o
      _crc_model_unload in crc_model.o
      _kh_resize_crc_stubs in crc_model.o
      _kh_resize_crc_models in crc_model.o
      _crc_nif_debug_table_1 in crc_nif.o
  "_enif_get_map_size", referenced from:
      _crc_init in crc_nif.o
      _crc_init_map_extend in crc_nif.o
  "_enif_get_map_value", referenced from:
      _crc_init in crc_nif.o
      _crc_init_map_extend in crc_nif.o
  "_enif_get_resource", referenced from:
      _crc_resource_get in crc_resource.o
      _xnif_slice_trap in xnif_slice.o
  "_enif_get_tuple", referenced from:
      _crc_init_tuple in crc_nif.o
  "_enif_get_uint", referenced from:
      _crc_nif_checksum_xor_1_work in checksum_xor.o
      _crc_nif_checksum_xor_1_done in checksum_xor.o
      _crc_nif_crc_8_2 in crc_8.o
      _crc_nif_crc_8_init_1 in crc_8.o
      _crc_nif_crc_8_update_2 in crc_8.o
      _crc_nif_crc_8_final_1 in crc_8.o
      _crc_nif_crc_8_2_work in crc_8.o
      ...
  "_enif_get_ulong", referenced from:
      _crc_init_tuple in crc_nif.o
  "_enif_inspect_binary", referenced from:
      _crc_nif_checksum_xor_1 in checksum_xor.o
      _crc_nif_checksum_xor_1_work in checksum_xor.o
      _crc_nif_crc_8_2 in crc_8.o
      _crc_nif_crc_8_update_2 in crc_8.o
      _crc_nif_crc_8_2_work in crc_8.o
      _crc_nif_crc_8_update_2_work in crc_8.o
  "_enif_inspect_iolist_as_binary", referenced from:
      _crc_nif_crc_fast_2 in crc_nif.o
      _crc_nif_crc_fast_update_2 in crc_nif.o
      _crc_nif_crc_slow_2 in crc_nif.o
      _crc_nif_crc_slow_update_2 in crc_nif.o
      _crc_nif_crc_fast_2_work in crc_nif.o
      _crc_nif_crc_fast_update_2_work in crc_nif.o
      _crc_nif_crc_slow_2_work in crc_nif.o
      ...
  "_enif_is_atom", referenced from:
      _crc_init in crc_nif.o
  "_enif_is_map", referenced from:
      _crc_init in crc_nif.o
  "_enif_is_ref", referenced from:
      _crc_init in crc_nif.o
  "_enif_is_tuple", referenced from:
      _crc_init in crc_nif.o
  "_enif_keep_resource", referenced from:
      _crc_resource_create in crc_resource.o
      _crc_resource_clone in crc_resource.o
  "_enif_make_atom", referenced from:
      _crc_model_load in crc_model.o
      _crc_model_list in crc_model.o
      _crc_nif_make_atoms in crc_nif.o
  "_enif_make_badarg", referenced from:
      _crc_nif_checksum_xor_1 in checksum_xor.o
      _crc_nif_checksum_xor_1_done in checksum_xor.o
      _crc_nif_crc_8_2 in crc_8.o
      _crc_nif_crc_8_init_1 in crc_8.o
      _crc_nif_crc_8_update_2 in crc_8.o
      _crc_nif_crc_8_final_1 in crc_8.o
      _crc_nif_crc_8_2_done in crc_8.o
      ...
  "_enif_make_list_from_array", referenced from:
      _crc_nif_debug_table_1 in crc_nif.o
  "_enif_make_map_put", referenced from:
      _crc_model_list in crc_model.o
      _crc_nif_crc_info_1 in crc_nif.o
  "_enif_make_new_binary", referenced from:
      _crc_model_list in crc_model.o
      _crc_nif_crc_info_1 in crc_nif.o
  "_enif_make_new_map", referenced from:
      _crc_model_list in crc_model.o
      _crc_nif_crc_info_1 in crc_nif.o
  "_enif_make_resource", referenced from:
      _crc_nif_crc_fast_2 in crc_nif.o
      _crc_nif_crc_fast_init_1 in crc_nif.o
      _crc_nif_crc_fast_update_2 in crc_nif.o
      _crc_nif_crc_slow_2 in crc_nif.o
      _crc_nif_crc_slow_init_1 in crc_nif.o
      _crc_nif_crc_slow_update_2 in crc_nif.o
      _xnif_slice_schedule in xnif_slice.o
      ...
  "_enif_make_tuple", referenced from:
      _crc_nif_debug_table_1 in crc_nif.o
      _crc_init in crc_nif.o
      _crc_init_map_extend in crc_nif.o
  "_enif_make_uint", referenced from:
      _crc_nif_checksum_xor_1 in checksum_xor.o
      _crc_nif_checksum_xor_1_work in checksum_xor.o
      _crc_nif_checksum_xor_1_done in checksum_xor.o
      _crc_nif_crc_8_2 in crc_8.o
      _crc_nif_crc_8_init_1 in crc_8.o
      _crc_nif_crc_8_update_2 in crc_8.o
      _crc_nif_crc_8_final_1 in crc_8.o
      ...
  "_enif_make_ulong", referenced from:
      _crc_nif_debug_table_1 in crc_nif.o
      _crc_nif_crc_fast_2 in crc_nif.o
      _crc_nif_crc_fast_final_1 in crc_nif.o
      _crc_nif_crc_slow_2 in crc_nif.o
      _crc_nif_crc_slow_final_1 in crc_nif.o
      _crc_nif_crc_info_1 in crc_nif.o
      _crc_nif_crc_residue_1 in crc_nif.o
      ...
  "_enif_monotonic_time", referenced from:
      _xnif_slice_trap in xnif_slice.o
  "_enif_open_resource_type", referenced from:
      _crc_resource_load in crc_resource.o
      _crc_resource_upgrade in crc_resource.o
      _xnif_slice_load in xnif_slice.o
      _xnif_slice_upgrade in xnif_slice.o
  "_enif_realloc", referenced from:
      _kh_resize_crc_stubs in crc_model.o
      _kh_resize_crc_models in crc_model.o
  "_enif_release_resource", referenced from:
      _crc_nif_crc_fast_2 in crc_nif.o
      _crc_nif_crc_fast_init_1 in crc_nif.o
      _crc_nif_crc_fast_update_2 in crc_nif.o
      _crc_nif_crc_slow_2 in crc_nif.o
      _crc_nif_crc_slow_init_1 in crc_nif.o
      _crc_nif_crc_slow_update_2 in crc_nif.o
      _crc_nif_crc_residue_1 in crc_nif.o
      ...
  "_enif_schedule_nif", referenced from:
      _xnif_slice_schedule in xnif_slice.o
      _xnif_slice_trap in xnif_slice.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [/Users/hajtojakub/Projects/membrane-demo/rtp_to_hls/_build/dev/lib/crc/priv/crc_nif.so] Error 1
could not compile dependency :crc, "mix compile" failed. You can recompile this dependency with "mix deps.compile crc", update it with "mix deps.update crc" or clean it with "mix deps.clean crc"
==> membrane_demo_rtp_to_hls
** (Mix) Could not compile with "make" (exit status: 2).
You need to have gcc and make installed. Try running the
commands "gcc --version" and / or "make --version". If these programs
are not installed, you will be prompted to install them.

I proceeded to check the env:

  rtp_to_hls ●  gcc --version                                     
Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 11.0.3 (clang-1103.0.32.62)
Target: x86_64-apple-darwin19.5.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin



rtp_to_hls ●  make --version                                     
GNU Make 3.81
Copyright (C) 2006  Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.

This program built for i386-apple-darwin11.3.0

This is most likely configuration issue. I will post minimal reproducible project though

What library are you using for CRC? I'm guessing this: github.com/TattdCodeMonkey/crc Are you using the latest version? If you clone the repo and run mix do deps.get, compile does it work? — mroach
Nope. I've done clean, mix deps.clean multiple times. As you seen in first post I've used rm -rf deps/ _build/ && mix deps.get && mix compile. So the output was with fresh deps. — Haito

Aleksei Matiushkin Aleksei Matiushkin · Accepted Answer · 2020-07-10T04:18:01

You need to install erlang development libraries, where this _enif_*** family of functions is declared.

On Debian Linux:

through Erlang Solutions — preferrable
using distro repo: sudo apt install erlang-dev

For MacOS, Erlang Solutions provide the ancient OTP version 19.3 only, I have no idea whether brew provides the latest OTP. If it does, do brew install erlang-r23-dev or like. If it does not, you are probably in a position to compile erlang yourself.

NB please refer to the very valuable comment below to see how to teach MacOS there is dev version already installed.

Elixir CRC will not compile on MAC OS

1 Answers